Oil-burner.



J. A. GUERIN.

OIL BURNER. APPLICATION FILED AUG.28. 1916.

1,%%5 2%2 Patented May 8, 1917.

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T all whom it may concern:

Be it known that I, JosEPH A; GUERIN, a citizen of the United States,and a resident of Seattle, in the county of King and State ofWashington, have invented certain new and useful Improvements inOil-Burners, of which the following is a full, true, and exactspecification.

My invention relates to oil burners and more particularly to burnerheads and has for its principal object; to provide an im proved andnovel burner head which automatically adjusts the spray openings inproportion to the amount or pressure of the oil mixture. In oil burningsystems it is common practice to force a mixture of oil and air or oiland steam under pressure through a burner head or nozzle before reachingthe combustion chamber. It is also common practice in such systems thatthe feeding of oil and steam automatically controls so that when acertain pressure of steam is reached the supply of oil mixture isgreatly reduced. When the supply of oil mixture is reduced the pressureis materially reduced also, with the result that the small amount of oilflowing instead of being sprayed from the head is allowed to run fromthe head and is therefore not broken up as it should be for combustionpurposes. The burning of oil which has not been properly atomizedresults in the formation of much smoke and the carrying over ofunconsumed carbon which is deposited in the tubes of the boiler or otherapparatus beneath which the oil burner is operated and furthermaterially increases the smoke nuisance.' My device is designed withmeans for closing most of the outlet ports when the .oil supply isreduced with the result that the available port opening is in proportionto the amount of oilflow so that instead of flowing sluggishly from theports it is sprayed from a reduced port.

This results in the small amount of oil bemg as perfectly atomized asthe greater amount and thereby obviates the imperfect combustion of theoil.

'Other objectswill appear as my invention is more fully explained in thefollowing specification, illustrated in the accompanying drawings andpointed out in the appended claims. 7

In the drawings Figure 1 is a plan view of my device with the coverremoved. Fig. 2 is a side cross sectional elevation of same with thecover in place.

Specification of Letters Ilatent.

Patented May S, EH91 Application filed August 28, 1916. Serial No.117,153.

Referring more particularly to the drawings, numeral 1 indicates an oilmixture supply pipe to the end of which is secured a slotted ports 4.Flap valves 6 are set in the chambered ports of head casting 2 and havetheir rear ends supported on pins 7 while the front ends normally restagainst ledges 8 which are on line with the inner edge. of ports 4. Thevalves 6'normally are convergently placed with respect to each other andare of such thickness as to completely close the ports 4. Springs 9 and10 retain the valves 6 in closed position normally. A

permissible amount of operating of the valve 6 may be controlled byadjusting the tension of springs 9. When the flow of oil mixture entersthe head beyond the valve 6 the pressure of the mixture will besufficient to open the valves with respect to the ports 4 and allow themixture to spray through the said ports. Oil will also be sprayedthrough the ports 5 under this condition. When the supply and pressureof oil' mixture is materially reduced,- the springs 9. will besulficient to close the valves 6 with respetto the ports 4, therebyleaving only auxlliary ports 5 uncovered. The size of ports 5 issufiicient to allow the reduced amount of oil mixture to spray throughthem with suficient pressure-to atomize the oil. v

While I have shown a particular form of embodiment of my invention, I amaware that many minor changes therein W111 readily suggest themselves toothers skilled in the art without departing from the spirit and scope ofthe invention, and I'therefore desire to avoid being limited to theexact form shown and described.

I-Iaving described my invention, what I claim as new and desire toprotect by Letters Patent, is

1. In an oil burner head which includes a chambered and portedheadcasting, the combination of automatic pressure actuated port closingflap valves pivotally mounted within said head, whereby when the supplyand pressure of oil mixture is reduced the ports are automaticallyclosed, and auxiliary ports in-said head which are independent ofsaidcombination of a ported and chambered burner head, port closing flapvalvesinounted Within said head and normally closing the said ports,adjustable spring means for retainin'g said valves in a closed position,whereby the pressure necessary to open said Valves may be regulated, andauxiliary ports out in said head, whereby when the pressure and quantityof" fuel mixture is reduced to such an extent that the said valves arein a closed position, the reduced amount of fuel mixture will passthrough the auxiliary porlts with sufficientpressure to atomize the 3.An automatic pressure regulated oil burner head comprising a coredcasting open at either side, cover plates for said openings, slottedports in the front of said head, flap valves loosely pivoted adjacentthe back of said head chamber and normally closing said ports anddividing the said chamber into three separate compartments, auxiliaryports in said head intermediate of said flap valves, and adjustablespring means for normally holding said valves in normal position.

JOSEPH A. GUERIN.

